| 对汶川8.0级地震前四川地区地形变类观测异常的研究 |
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| 引用本文： | 程万正,苏琴,孙毅.对汶川8.0级地震前四川地区地形变类观测异常的研究[J].四川地震,2011(1):1-10. |
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| 作者姓名： | 程万正 苏琴 孙毅 |
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| 作者单位： | 1. 四川省地震局预报研究所,四川,成都,610041
2. 四川省地震局测绘工程院,四川,雅安,625000 |
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| 基金项目： | 本文采用四川省地震局测绘工程院、预报研究所总结部分资料,参阅朱航高级工程师的有关分析材料,在此致谢. |
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| 摘 要： | 研究给出四川地区跨断层短水准、短基线和固定形变台在汶川8.0级地震前出现的异常现象.四川地区跨断层流动垂直、水平形变观测场地观测,在汶川8.0级地震前出现中长期趋势异常的场地数为6个,1个为长期趋势异常,其余5个为中期趋势异常.异常观测场地比为6/31=0.19.其中,龙门山断裂带所在的川北地区有4处跨断层流动短水准观...
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| 关 键 词： | 地形变 观测异常 疑似异常 汶川地震 |
Study on the datum anomalies of crust deformation in Sichuan region before the 2008 M8.0 Wenchuan Earthquake |
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| CHENG Wan-zheng,SHU Qing,SUN Yi.Study on the datum anomalies of crust deformation in Sichuan region before the 2008 M8.0 Wenchuan Earthquake[J].Earthquake Research in Sichuan,2011(1):1-10. |
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| Authors: | CHENG Wan-zheng SHU Qing SUN Yi |
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| Institution: | CHENG Wan-zheng,SHU Qing,SUN Yi(Earthquake Prediction Institute,Earthquake Administration of Sichuan Province,Sichuan Chengdu 610041,China) |
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| Abstract: | The crust deformation anomaly data we analyzed in the paper include the following observatories of fixed mark-stones with the methods of the fault crossing short range leveling and short baseline before the 2008 Wenchuan M8.0 Earthquake.There are 6 observatory sites with medium-term abnormal data changes and an observatory site with a long-term abnormal data changes among 31 observatory sites.In another words,the abnormal rate is 6/31.For 4 observatory sites distributed along the Longmenshan seismic faults ... |
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| Keywords: | crust deformation observatory abnormal data change the 2008 Wenchuan M8 0 Earthquake |
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